John is a Gastroenterologist and Clinical Senior Lecturer in the Department of Medicine at the University of Sydney. John works both in the public and private sectors of medicine.
John is Governing Director and owner of Pennant Hills Day Surgery in NSW since 2006.
He has been a committee member of the Day Hospitals Australia since 2006 and currently is the Chairman of the NSW Chapter of the Day Hospitals Australia. In May 2015, John also took on the role of Australian representative, on The International Association of Ambulatory Surgery (IAAS) General Assembly.